Finding the Fourth Proportional to 128,618,839.50, 177,495,612.81 and 69,882,485.52
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Solution
The fourth proportional to 128,618,839.50, 177,495,612.81 and 69,882,485.52 is: 96,438,707.12
Step by Step Solution
- Step 1: Write the proportion equation
128,618,839.50 : 177,495,612.81 = 69,882,485.52 : x - Step 2: Convert to fraction form
128,618,839.50/177,495,612.81 = 69,882,485.52/x - Step 3: Cross multiply
128,618,839.50x = 177,495,612.81 × 69,882,485.52 - Step 4: Simplify right side
128,618,839.50x = 12,403,834,592,058,350 - Step 5: Solve for x
x = 12,403,834,592,058,350/128,618,839.50 - Step 6: Final answer
x = 96,438,707.12
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.